.el-header{
    background-color: #0096dc;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
}
.el-aside{
    width: 100px;
    background-color: #fff;
    overflow: hidden;
    position: absolute;
    top: 60px;
    bottom: 0;
}
.el-main{
    background-color: #fff;
    position: absolute;
    left: 307px;
    right: 0;
    top: 60px;
    bottom: 0;
}
h1{
    font-family: 楷体;
    margin-left:50px ;
}
#logo{
    width: 50px;
    position: absolute;
    left: 20px;
    top: 10px;
}
.el-card{
    margin: 0 auto;
    width: 600px;
    height: 500px;
}